public async Task <Maybe <string> > ExportStoredFiles(ICollection <DocumentReference> documents)
{
var documentReference = documents.FirstOrDefault();
if (!(documentReference?.Collection is FileCollectionReference))
{
return(null);
}
Maybe <string> maybePath = null;
if (documents.Count == 1)
{
var file = documentReference;
maybePath = await _applicationInteraction.ShowSaveFileDialog(fileName : file.LiteDocument["filename"]);
if (maybePath.HasValue)
{
(file.Collection as FileCollectionReference)?.SaveFile(file, maybePath.Value);
}
}
else
{
maybePath = await _applicationInteraction.ShowFolderPickerDialog("Select folder to export files to...");
if (maybePath.HasValue)
{
foreach (var file in documents)
{
var prefix = file.LiteDocument["_id"].AsString.Replace('/', ' ').Split('.').FirstOrDefault();
var path = Path.Combine(maybePath.Value, $"{prefix}-{file.LiteDocument["filename"].AsString}");
ArchiveExtensions.EnsureFileDirectory(path);
(file.Collection as FileCollectionReference)?.SaveFile(file, path);
}
}
}
return(maybePath);
}
private async Task <Maybe <string> > ExportStoredFiles(ICollection <DocumentReference> documents)
{
var fileDocuments = documents.OfType <FileDocumentReference>().ToArray();
if (!fileDocuments.Any())
{
return(null);
}
Maybe <string> maybePath;
if (documents.Count == 1)
{
var file = fileDocuments[0];
maybePath = await _applicationInteraction.ShowSaveFileDialog(fileName : file.Filename);
if (maybePath.HasValue)
{
file.SaveFile(maybePath.Value);
}
}
else
{
maybePath = await _applicationInteraction.ShowFolderPickerDialog("Select folder to export files to...");
if (maybePath.HasValue)
{
foreach (var file in fileDocuments)
{
var prefix = file.GetIdAsFilename();
var path = Path.Combine(maybePath.Value, $"{prefix}-{file.Filename}");
ArchiveExtensions.EnsureFileDirectory(path);
file.SaveFile(path);
}
}
}
return(maybePath);
}